CN103695731A - Production process of aluminium alloy specially used for automobile hubs in salt damage regions - Google Patents

Production process of aluminium alloy specially used for automobile hubs in salt damage regions Download PDF

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Publication number
CN103695731A
CN103695731A CN201310356031.6A CN201310356031A CN103695731A CN 103695731 A CN103695731 A CN 103695731A CN 201310356031 A CN201310356031 A CN 201310356031A CN 103695731 A CN103695731 A CN 103695731A
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China
Prior art keywords
aluminium alloy
refining
standing
furnace
salt damage
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Application number
CN201310356031.6A
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Chinese (zh)
Inventor
毛贻国
臧立根
甄跃军
张厚敏
蔡振斌
王大龙
尚颖
薛震
杨明娟
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秦皇岛开发区美铝合金有限公司
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Priority to CN201310356031.6A priority Critical patent/CN103695731A/en
Publication of CN103695731A publication Critical patent/CN103695731A/en

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Abstract

A production process of aluminium alloy specially used for automobile hubs in salt damage regions. The aluminium alloy comprises the following components by weight: 6.8-7.4% of Si, 0.32-0.40% of Mg, 0.08-0.13% of Ti, not more than 0.13% of Fe, not more than 0.01% of Zn, not more than 0.03% of Ca, not more than 0.01% of Cu, not more than 0.05% of Mn, not more than 0.01% of P, not more than 0.05% of Ni, not more than 0.05% of Cr, not more than 0.01% of Sn, not more than 0.05% of Pb, and the balance of raw aluminum ingots. The process comprises the following steps: melting the components of Si, Ti, Fe, Zn, Ca, Cu, Mn, P, Ni, Cr, Sn, Pb, and raw aluminum ingots in a melting furnace according to the weight ratios, when the temperature reaches 750-820 DEG C, uniformly stirring the melt, adding Mg according to the weight ratio, uniformly stirring, removing slag to obtain aluminium alloy melt; introducing the aluminium alloy melt into a standing furnace, spraying a refining agent with argon or nitrogen into the aluminium alloy melt for refining; when the refining process completes, removing slag, allowing the aluminium alloy melt to stand in the standing furnace for 30 min; performing casting molding of the aluminium alloy melt after standing by an automatic casting machine, stacking and packaging to obtain the aluminium alloy specially used for automobile hubs in salt damage regions.

Description

Salt damage area automotive hub dedicated aluminium alloy production technique
Technical field
The present invention relates to forge salt damage area automotive hub dedicated aluminium alloy, relate to specifically a kind of production technology that is specifically designed to the dedicated aluminium alloy material of Honda board automotive hub, belong to aluminium alloy wheel hub material produce technical field.
Background technology
Wheel hub is a vitals of automobile, and its quality directly has influence on performance and the aesthetic measure of automotive performance.Because aluminium alloy is lightweight, intensity is high, good toughness, many automotive hubs both domestic and external adopt aluminum alloy materials to make.
The production technique of automotive hub, the performance requriements that it is taken turns to hub material is very strict, the wheel hub of producing, not only require to have higher intensity, erosion resistance, good impelling strength, fatigue resistance and good wear resisting property, but also must there is better smooth finish, to strengthen the aesthetic of automotive hub.
In recent years, fast development along with automobile industry, adopt aluminum alloy materials to manufacture automotive hub and become universal phenomenon, common A356 aluminium alloy automobile hub in use, especially regional at North America salt damage, the high humidity of air, high containing salt component, airborne corrosive ion is more, and in this environment, the long-term A356 aluminium alloy wheel hub that uses, can cause aluminium alloy wheel hub surface to be corroded.Due to the Cu in aluminium alloy, the electropotential of the impurity such as Zn and aluminium is different, once run into the more air ambient of corrosive ion, will aggravate the extent of corrosion of aluminium alloy, infringement automotive hub, cause aluminium alloy wheel hub surface dulling, or there is blackspot, not only can have influence on the attractive in appearance of automotive hub, also can reduce intensity and the performance of aluminium alloy wheel hub, shorten the work-ing life of automotive hub, reduce the security of running car.
Summary of the invention
The object of the invention is for a kind of salt damage area automotive hub dedicated aluminium alloy is provided.Adopt this explained hereafter aluminum alloy materials out, have higher wear resisting property and good free cutting property, its tensile strength, yield strength, unit elongation are compared with A356 aluminum alloy materials, are greatly increased; The automotive hub that adopts this aluminum alloy materials to produce, has stronger erosion resistance, and long service life is specious, is highly suitable under the more environment of salt damage area, North America or corrosive ion and uses.
In order to achieve the above object, the present invention adopts following technical scheme to realize:
Salt damage area automotive hub dedicated aluminium alloy, its composition and weight percent thereof are as follows:
Si6.8~7.4%,Mg0.32~0.40%,T?i0.08~0.13%,Fe≤0.13%,Zn≤0.01%,
Ca≤0.03%, Cu≤0.01%, Mn≤0.05%, P≤0.01%, Ni≤0.05%, Cr≤0.05%, Sn≤0.01%, Pb≤0.05%, surplus is virgin aluminium ingot;
Described virgin aluminium ingot is the A00 aluminium ingot of Fe≤0.09%;
Described Si is pure metal silicon;
Described Mg is pure metal magnesium;
Salt damage area automotive hub dedicated aluminium alloy:
(1) melting
Get composition Si, Ti, Fe, Zn, Ca, Cu, Mn, P, Ni, Cr, Sn, Pb, virgin aluminium ingot, by described weight ratio, be placed to and in smelting furnace, carry out melting, during storing, virgin aluminium ingot is placed in to the bottom of smelting furnace, Si is placed on the upper strata of virgin aluminium ingot, put into successively again other compositions, then smelting furnace is heated, when temperature reaches 750~820 ℃, use whipping appts that liquation is stirred, then add Mg by above-mentioned weight ratio, continue to stir ten minutes, use metallurgical deslagging device to remove the gred, make molten aluminium alloy;
(2) refining, standing
Molten aluminium alloy in smelting furnace is imported in standing furnace, use argon gas or nitrogen that refining agent is sprayed in molten aluminium alloy and carries out refining, the add-on of refining agent is 1.5 ‰ of molten aluminium alloy weight; After refining process completes, use metallurgical deslagging device to remove the gred to molten aluminium alloy; Then by the standing 30min in standing furnace of the molten aluminium alloy after refining, and by the temperature in standing furnace, remain between 735 ℃~745 ℃;
Described refining agent is by composition KCl, NaCl, CaF 2, K 2siFb, K 2a1F 6, Na 2siF 6, Na 3cO 3mix, the weight percent of composition is KCl45%, NaCl10%, CaF 25%, K 2siFb5%, K 2a1F 615%, Na 2si F 615%, Na 3cO 35%;
(3) casting
Molten aluminium alloy in standing furnace is carried out to shape casting by automatic casting machine, and liquid filling machine speed is 30~50HZ, and carries out piling packing by Automatic Code ingot machine, so makes salt damage area automotive hub dedicated aluminium alloy.
The present invention mainly has following beneficial effect:
Adopt this explained hereafter aluminum alloy materials out, have higher wear resisting property and good free cutting property, its tensile strength, yield strength, unit elongation are compared with A356 aluminum alloy materials, are greatly increased; The automotive hub that adopts this aluminum alloy materials to produce, has stronger erosion resistance, and long service life is specious, is highly suitable under the more environment of coastland, North America or corrosive ion and uses.
Below in conjunction with embodiment, the present invention is described in further detail.
Embodiment
Embodiment
Si6.8~7.4%, Mg0.32~0.40%, Ti0.08~0.13%, Fe≤0.13%, Zn≤0.01%, Ca≤0.03%, Cu≤0.01%, Mn≤0.05%, P≤0.01%, Ni≤0.05%, Cr≤0.05%, Sn≤0.01%, Pb≤0.05%, surplus is virgin aluminium ingot;
Described virgin aluminium ingot is the A00 aluminium ingot of Fe≤0.09%;
Described Si is pure metal silicon;
Described Mg is pure metal magnesium;
Salt damage area automotive hub dedicated aluminium alloy:
(1) melting
Get composition Si, Ti, Fe, Zn, Ca, Cu, Mn, P, Ni, Cr, Sn, Pb, virgin aluminium ingot, by described weight ratio, be placed to and in smelting furnace, carry out melting, during storing, virgin aluminium ingot is placed in to the bottom of smelting furnace, Si is placed on the upper strata of virgin aluminium ingot, put into successively again other compositions, then smelting furnace is heated, when temperature reaches 750~820 ℃, use whipping appts that liquation is stirred, then add Mg by above-mentioned weight ratio, continue to stir ten minutes, use metallurgical deslagging device to remove the gred, make molten aluminium alloy;
(2) refining, standing
Molten aluminium alloy in smelting furnace is imported in standing furnace, use argon gas or nitrogen that refining agent is sprayed in molten aluminium alloy and carries out refining, the add-on of refining agent is 1.5 ‰ of molten aluminium alloy weight; After refining process completes, use metallurgical deslagging device to remove the gred to molten aluminium alloy; Then by the standing 30min in standing furnace of the molten aluminium alloy after refining, and by the temperature in standing furnace, remain between 735 ℃~745 ℃;
Described refining agent is mixed by composition KCl, NaCl, CaF2, K2SiFb, K2A1F6, Na2SiF6, Na3CO3, and the weight percent of composition is KCl45%, NaCl10%, CaF25%, K2SiFb5%, K2A1F615%, Na2Si F615%, Na3CO35%;
(3) casting
Molten aluminium alloy in standing furnace is carried out to shape casting by automatic casting machine, and liquid filling machine speed is 30~50HZ, and carries out piling packing by Automatic Code ingot machine, so makes salt damage area automotive hub dedicated aluminium alloy.

Claims (1)

1. a salt damage area automotive hub dedicated aluminium alloy, is characterized in that: its composition and weight percent thereof are as follows:
Si6.8~7.4%, Mg0.32~0.40%, Ti0.08~0.13%, Fe≤0.13%, Zn≤0.01%, Ca≤0.03%, Cu≤0.01%, Mn≤0.05%, P≤0.01%, Ni≤0.05%, Cr≤0.05%, Sn≤0.01%, Pb≤0.05%, surplus is virgin aluminium ingot;
Described virgin aluminium ingot is the A00 aluminium ingot of Fe≤0.09%;
Described Si is pure metal silicon;
Described Mg is pure metal magnesium;
Salt damage area automotive hub dedicated aluminium alloy production technique:
(1) melting
Get composition Si, Ti, Fe, Zn, Ca, Cu, Mn, P, Ni, Cr, Sn, Pb, virgin aluminium ingot, by described weight ratio, be placed to and in smelting furnace, carry out melting, during storing, virgin aluminium ingot is placed in to the bottom of smelting furnace, Si is placed on the upper strata of virgin aluminium ingot, put into successively again other compositions, then smelting furnace is heated, when temperature reaches 750~820 ℃, use whipping appts that liquation is stirred, then add Mg by above-mentioned weight ratio, continue to stir ten minutes, use metallurgical deslagging device to remove the gred, make molten aluminium alloy;
(2) refining, standing
Molten aluminium alloy in smelting furnace is imported in standing furnace, use argon gas or nitrogen that refining agent is sprayed in molten aluminium alloy and carries out refining, the add-on of refining agent is 1.5 ‰ of molten aluminium alloy weight; After refining process completes, use metallurgical deslagging device to remove the gred to molten aluminium alloy; Then by the standing 30min in standing furnace of the molten aluminium alloy after refining, and by the temperature in standing furnace, remain between 735 ℃~745 ℃;
Described refining agent is by composition KCl, NaCl, CaF 2, K 2siFb, K 2a1F 6, Na 2siF 6, Na 3cO 3mix, the weight percent of composition is KCl45%, NaCl10%, CaF 25%, K 2siFb5%, K 2a1F 615%, Na 2si F 615%, Na 3cO 35%;
(3) casting
Molten aluminium alloy in standing furnace is carried out to shape casting by automatic casting machine, and liquid filling machine speed is 30~50HZ, and carries out piling packing by Automatic Code ingot machine, so makes salt damage area automotive hub dedicated aluminium alloy.
CN201310356031.6A 2013-08-14 2013-08-14 Production process of aluminium alloy specially used for automobile hubs in salt damage regions CN103695731A (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104357715A (en) * 2014-12-08 2015-02-18 广州立中锦山合金有限公司 Special aluminum alloy for automobile transmission pump bodies and preparation method thereof
CN104818398A (en) * 2015-03-23 2015-08-05 芜湖黄燕实业有限公司 Aluminum alloy for wheel hub and preparation method thereof, and aluminum alloy wheel hub
CN105063392A (en) * 2015-08-13 2015-11-18 安徽优合铝业科技有限公司 Hub casting and forming technology
CN105925856A (en) * 2015-02-26 2016-09-07 通用汽车环球科技运作有限责任公司 Novel regeneration cast aluminum alloy for structural application
CN106367638A (en) * 2016-08-28 2017-02-01 广州华车科技有限公司 Automotive alloy and manufacturing method thereof
WO2017059528A1 (en) * 2015-10-06 2017-04-13 Rio Tinto Alcan International Limited Zinc as an additive for limiting the corrosion caused by nickel contamination in aluminum alloys
CN106676298A (en) * 2016-12-26 2017-05-17 广东迪生力汽配股份有限公司 Grain refinement method for aluminum alloy hub
CN106756209A (en) * 2016-12-08 2017-05-31 安徽睿知信信息科技有限公司 A kind of high intensity wheel hub founding materials and its casting technique
CN107217179A (en) * 2017-05-31 2017-09-29 中信戴卡股份有限公司 A kind of aluminum alloy materials, preparation method and use
CN110396626A (en) * 2019-07-22 2019-11-01 张家港市众欣机械有限公司 A kind of high tenacity, corrosion resistant aluminum alloy material and preparation method thereof
US10690087B2 (en) 2015-12-11 2020-06-23 GM Global Technology Operations LLC Aluminum cylinder block and method of manufacture

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CN101474668A (en) * 2009-01-13 2009-07-08 通州市四安球墨铸铁有限公司 Method for casting aluminium alloy
CN102373350A (en) * 2010-08-07 2012-03-14 秦皇岛开发区美铝合金有限公司 Preparation method for special aluminum-silicon-magnesium alloy for advanced car wheel hub
CN103173642A (en) * 2011-12-23 2013-06-26 秦皇岛开发区美铝合金有限公司 Refining agent for aluminum alloy in smelting process for automobile hub

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CN102373350A (en) * 2010-08-07 2012-03-14 秦皇岛开发区美铝合金有限公司 Preparation method for special aluminum-silicon-magnesium alloy for advanced car wheel hub
CN103173642A (en) * 2011-12-23 2013-06-26 秦皇岛开发区美铝合金有限公司 Refining agent for aluminum alloy in smelting process for automobile hub

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104357715A (en) * 2014-12-08 2015-02-18 广州立中锦山合金有限公司 Special aluminum alloy for automobile transmission pump bodies and preparation method thereof
CN105925856A (en) * 2015-02-26 2016-09-07 通用汽车环球科技运作有限责任公司 Novel regeneration cast aluminum alloy for structural application
CN104818398A (en) * 2015-03-23 2015-08-05 芜湖黄燕实业有限公司 Aluminum alloy for wheel hub and preparation method thereof, and aluminum alloy wheel hub
CN105063392A (en) * 2015-08-13 2015-11-18 安徽优合铝业科技有限公司 Hub casting and forming technology
WO2017059528A1 (en) * 2015-10-06 2017-04-13 Rio Tinto Alcan International Limited Zinc as an additive for limiting the corrosion caused by nickel contamination in aluminum alloys
US10690087B2 (en) 2015-12-11 2020-06-23 GM Global Technology Operations LLC Aluminum cylinder block and method of manufacture
CN106367638A (en) * 2016-08-28 2017-02-01 广州华车科技有限公司 Automotive alloy and manufacturing method thereof
CN106756209A (en) * 2016-12-08 2017-05-31 安徽睿知信信息科技有限公司 A kind of high intensity wheel hub founding materials and its casting technique
CN106676298A (en) * 2016-12-26 2017-05-17 广东迪生力汽配股份有限公司 Grain refinement method for aluminum alloy hub
CN107217179A (en) * 2017-05-31 2017-09-29 中信戴卡股份有限公司 A kind of aluminum alloy materials, preparation method and use
CN107217179B (en) * 2017-05-31 2019-03-19 中信戴卡股份有限公司 A kind of aluminum alloy materials, preparation method and use
CN110396626A (en) * 2019-07-22 2019-11-01 张家港市众欣机械有限公司 A kind of high tenacity, corrosion resistant aluminum alloy material and preparation method thereof

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